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4x4ord

Alberta

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Posted: 08/16/21 12:03am Link  |  Quote  |  Print  |  Notify Moderator

I forgot to back off the brake controller setting before sending my truck and fiver down the road with an inexperienced driver at the wheel. I was following along behind and noticed some very black long skid marks on the road just before turning into our campground. One quick look at my trailer tires confirmed my suspension.

[image]


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YC 1

Yuba City Calif./ Auburndale Florida

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Posted: 08/16/21 04:28am Link  |  Quote  |  Print  |  Notify Moderator

We pay for our education. Glad it was only that and thanks for sharing.


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valhalla360

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Posted: 08/16/21 04:56am Link  |  Quote  |  Print  |  Notify Moderator

Check that the brakes themselves aren't the issue. Did they seize up?

Even at max and locking up when braking...they should still release once the driver takes his foot off the brakes.


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pitch

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Posted: 08/16/21 06:42am Link  |  Quote  |  Print  |  Notify Moderator

valhalla360 wrote:

Check that the brakes themselves aren't the issue. Did they seize up?

Even at max and locking up when braking...they should still release once the driver takes his foot off the brakes.


Yep he sure skidded those tires for a distance. There should have been smoke rolling, he ain't got no mirrors?
Valhalla is correct though, your controller can be set to the max and this will not occur,you have a frozen brake.

4x4ord

Alberta

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Posted: 08/16/21 06:46am Link  |  Quote  |  Print  |  Notify Moderator

^^^^ The brakes are releasing fine. The controller was set to 7.5 and should have been set to 6.0. I took the truck for a spin afterward and was surprised to discover how the brakes felt normal set at 7.5 during a typical brake application yet it didn’t take much more than normal effort to get the wheels to lock up.

jdc1

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Posted: 08/16/21 07:41am Link  |  Quote  |  Print  |  Notify Moderator

Reminds me of the rime my nephew pulled the pin on the brake disconnect on my dump trailer. I asked why he did it. His said he wanted to see what would happen. 1/2 a block of skid marks is what happens. He never did that again. 20 years later, I gave him that same trailer.

JIMNLIN

Oklahoma

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Posted: 08/16/21 08:03am Link  |  Quote  |  Print  |  Notify Moderator

I pull several different size trailers with the same truck. I've flat spotted my 32' 5th wheel rv tires tires more that once because I forgot to back the controller off after pulling a heavier trailer.

And of course pulling one of my empty flat decks and hitting the first stop signs after pulling my rv trailer. This left long skinny black marks as the tires (no load) rode the center of the tread.
All the many rv and non rv trailers I've owned I R&R the trailers brakes with maybe heavier wire....get rid of all clamp type connectors...make solid connections....make sure each brake is receiving the correct amps/etc.
Doing so with the brake controller set high enough it can slide the tires even at max axle loads.

* This post was edited 08/16/21 08:11am by JIMNLIN *


"good judgment comes from experience, and a lot of that comes from bad judgment" ............ Will Rogers

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FishOnOne

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Posted: 08/17/21 04:43pm Link  |  Quote  |  Print  |  Notify Moderator

I hate it when that happens.


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ACZL

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Posted: 08/18/21 10:44am Link  |  Quote  |  Print  |  Notify Moderator

Brakes work !


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Crespro

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Posted: 08/18/21 03:16pm Link  |  Quote  |  Print  |  Notify Moderator

Hi. I have the same weight fifth wheel and run 7.0 on an F-250. Seems fine, but you suggest 6.0. I know there is a test at 20mph. Is that how you set your unit at 6.0?

Thanks!


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